07-16-2009, 04:05 AM
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You should in my view,do an immediate 50 percent water change using dechlorinator to treat the new water before it goes in the tank. Ammonia,and nitrites,should read zero in a mature or established tank and nitrAtes should be no higher than 40ppm. All of these are controlled by weekly water changes along with not overfeeding and vaccuming the gravel once a week during water changes. Your readings indicate overfeeding and lapse maint. Try reducing the amount of food you are offering and after the initial 50 percent water change, then perform smaller water changes every other day until your ammonia and nitrites are under control= zero. Water changes will also reduce Nitrates. I am assuming this is not a new tank due to the high nitrAte readings you posted. Frequent small water changes once a week will help get things in order along with feeding once a day and no more than you actually SEE the fish eat in approx one or two minutes.
Filters should be maintained regularly as well for healthy fish. Removing the filter pad,sponge.or cartridge during weekly water changes and swishing them around in old aquarium water and then sticking them back in is also a good idea only replacing the material if it begins to fall apart. Never clean biowheels and never use tapwater to clean filter material. The chlorine or chloramines in tapwater will be harmful to the beneficial bacteria that grows largely on this filter material. Perhaps you know all of this, if so,, you know what needs to be done.
Last edited by 1077; 07-16-2009 at 04:17 AM..